Oil-well packer



L; STEWART Oil Well Packer.

NLPH ERS PMoTo-ufnoeaAPnn. WASHINGTON. u. c

UNITED STATES PATENT ()FFICE.

LYMAN STEWART, OF TITUSVILLE, PENNSYLVANIA.

OIL-WELL PACKER.

SPECIFICATION forming part of Letters Patent No. 230,080, dated July 13,1880.

Application filed September 4, 1878.

To all whom it may concern:

Beit known that I, LYMAN STEWART, of Titusville, in the county ofCrawford and State of Pennsylvania, haX e invented certain new anduseful Improvements in Oil-Well Packers and I do hereby declare that thefollowing is a full, clear, and exact description of the invention,which will enable others skilled in the art to which it appertains tomake and use the same, reference being had to the accompanying drawing,and to letters of reference marked thereon, which forms a part of thisspecification.

In the drawing, which is a vertical section of a packer embodying myinvention, A represents the lower section of tubing, which rests uponthe-bottom of the well and extends up to the point at which it isdesired to locate the packer.

B is a flange screwed or otherwise secured to tubing A, this flangebeing made preferably of cast-iron.

a is a ring or small flange screwed upon the outside of the upper end oftubing A. The tubing is perforated near the upper end, as indicated ata.

O O is the telescopic cone-wedge, provided at its lower end with anopening to receive and fit closely the upper end of the tubing A. Theupper portion of the cone-section is of such internal diameter as toreceive the ring or flange a, which, when the parts are in the positionshown in the drawing, engages with a seat, 0, formed by contracting thecone-wedge at that point.

D is a reducer, screwed upon the upper end of the cone-section toreceive the upper portion of the tubing.

E is a hollow cylindrical block, of rubber, mounted upon the flange B,and from an examination of the drawing it will be readily seen that whenthe tubing A rests upon the bottom of the well the rubber may be packedtightly against the wall of the well by theconewedge. It will also beseen that when the wedge is withdrawn from the rubber, water may passfrom above the packer through. the holes a, and thence through tubing Ato the lower part of .the well, before the rubber has been withdrawnfrom the wall of the well, (by its own contraction or otherwise,) andthus equalize the pressure of the water upon both the upper and lowersides of the rubber.

The external diameter of both the flange B and the upper portion of thecone-wedge G is a little greater than that of the rubber F, thus keepingthe latter from contact with the wall of the well while the packer isbeing lowered to place, and insuring that the latter shall not beinjured by such contact.

What I claim is- In an oil-well packer, the section A of tubing,provided with the flange B and withthe ring a and holes a, incombination with the telescopic cone-section adapted to inclose or coverthe holes when it is forced into the rubber, substantially as set forth.

In testimony that I claim the foregoing as my own I affix my signaturein presence of two witnesses.

LYMAN STE WART.

Witnesses J. J. BARNSDALL, SAMUEL GRUMBINE.

